#ifndef _MQ2_H_
#define _MQ2_H_
#include "stm32f10x_conf.h"
#include "adc.h"
#include "math.h"

extern uint16_t dma_Value[amd_BufferSize];

extern void mq2_init(void);
extern float get_mq2_vol(void);
extern float get_smk_ppm(void);

#endif

